Technical Data Sheets Acoustic Performances

Acoustic performances

The measurements of noise reduction were taken with an omnidirectional source of pink noise (with the A-weighted sound level at 98 dBA), and are related to the correcting panels of the B and E series. (Technical Data sheets)

The tests were taken in soundproofed rooms installed in music centres and have shown high levels of sound reduction in a range of Hz frequencies (16 : 20000).

BOXY B – High noise reduction

MICROPHONE POSITION

EXPECTED REDUCTION

MEASURED REDUCTION

1 meter distance from the room

39 dBA

47 dBA

5 meters distance from the room

42 dBA

51 dBA

Inside the adjacent room

55 dBA

68 dBA

BOXY B VALUES OF NOISE REDUCTION for octave-band

Central frequency (Hz)

63

125

250

500

1000

2000

4000

8000

Reduction

23.8

36.7

44.6

49.8

51.9

57.9

56.1

79.3

BOXY E – High performances

MICROPHONE POSITION

EXPECTED REDUCTION

MEASURED REDUCTION

1 meter distance from the room

36 dBA

43 dBA

5 meters distance from the room

39 dBA

46 dBA

Inside the adjacent room

53 dBA

60 dBA

BOXY E VALUES OF NOISE REDUCTION for octave-band

Central frequency (Hz)

63

125

250

500

1000

2000

4000

8000

Reduction

23.6

28.7

32.9

42.6

43.8

42.5

47.0

49.0

BOXY E – BOXY E VALUES OF NOISE REDUCTION for octave-band

Central frequency (Hz)

63

125

250

500

1000

2000

4000

8000

Reduction

39.5

55.4

63.2

58.8

58.4

63.3

60.6

60.7

Internal acoustic

Boxy rooms are equipped with panels that have an absorbing side and a reflecting side, and bass trap. The measurement are referred to a room with an absorbing set: reverberation time is uniform.